So absorbed _______ in her work that she didn’t realize it was time that she picked up her daughter.
In the past we lost many chances, _______ we paid little attention.
The pen, _______ I had been writing for ten years, was broken.
Mary has two brothers, ________ are doctors.
The problem _______ you argued about yesterday has been solved.
My aunt bought me a book, the name _______ I have forgotten.